syslog.conf(4) (BSD Compatibility Package) syslog.conf(4)
NAME
syslog.conf - configuration file for syslogd system log daemon
SYNOPSIS
/etc/syslog.conf
DESCRIPTION
The file /etc/syslog.conf contains information used by the system log
daemon, syslogd(1M), to forward a system message to appropriate log
files and/or users. syslog preprocesses this file through m4(1) to
obtain the correct information for certain log files.
A configuration entry is composed of two TAB-separated fields:
"selector action"
The selector field contains a semicolon-separated list of priority
specifications of the form:
facility.level [ ; facility.level ]
where facility is a system facility, or comma-separated list of
facilities, and level is an indication of the severity of the
condition being logged. Recognized values for facility include:
user Messages generated by user processes. This is the default
priority for messages from programs or facilities not
listed in this file.
kern Messages generated by the kernel.
mail The mail system.
daemon System daemons, such as ftpd(1M), routed(1M), etc.
auth The authorization system: login(1), su(1M), getty(1M),
etc.
lpr The line printer spooling system: lpr(1), lpc(1M),
lpd(1M), etc.
news Reserved for the USENET network news system.
uucp Reserved for the UUCP system; it does not currently use the
syslog mechanism.
cron The cron /at facility; crontab(1), at(1), cron(1M), etc.
local0-7 Reserved for local use.
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mark For timestamp messages produced internally by syslogd.
* An asterisk indicates all facilities except for the mark
facility.
Recognized values for level are (in descending order of severity):
emerg For panic conditions that would normally be broadcast to
all users.
alert For conditions that should be corrected immediately, such
as a corrupted system database.
crit For warnings about critical conditions, such as hard device
errors.
err For other errors.
warning For warning messages.
notice For conditions that are not error conditions, but may
require special handling.
info Informational messages.
debug For messages that are normally used only when debugging a
program.
none Do not send messages from the indicated facility to the
selected file. For example, a selector of
*.debug;mail.none
will send all messages except mail messages to the selected
file.
The action field indicates where to forward the message. Values for
this field can have one of four forms:
⊕ A filename, beginning with a leading slash, which indicates that
messages specified by the selector are to be written to the
specified file. The file will be opened in append mode.
⊕ The name of a remote host, prefixed with an @, as with: @server,
which indicates that messages specified by the selector are to be
forwarded to the syslogd on the named host.
⊕ A comma-separated list of usernames, which indicates that messages
specified by the selector are to be written to the named users if
they are logged in.
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syslog.conf(4) (BSD Compatibility Package) syslog.conf(4)
⊕ An asterisk, which indicates that messages specified by the
selector are to be written to all logged-in users.
Blank lines are ignored. Lines for which the first nonwhite
character is a `#' are treated as comments.
EXAMPLE
With the following configuration file:
*.notice;mail.info /var/log/notice
*.crit /var/log/critical
kern,mark.debug /dev/console
kern.err @server
*.emerg *
*.alert root,operator
*.alert;auth.warning /var/log/auth
syslogd will log all mail system messages except debug messages and
all notice (or higher) messages into a file named /var/log/notice.
It logs all critical messages into /var/log/critical, and all kernel
messages and 20-minute marks onto the system console.
Kernel messages of err (error) severity or higher are forwarded to
the machine named server. Emergency messages are forwarded to all
users. The users root and operator are informed of any alert
messages. All messages from the authorization system of warning
level or higher are logged in the file /var/log/auth.
FILES
/etc/syslog.conf
/var/log/notice
/var/log/critical
/var/log/auth
SEE ALSO
logger(1), lpr(1), syslogd(1M), syslog(3).
at(1), crontab(1), login(1), lp(1), su(1M) in the User's Reference
Manual.
cron(1M), getty(1M) in the System Administrator's Reference Manual.
m4(1) in the Programmer's Reference Manual.
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